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Finding the Fourth Proportional to 91,578, 137,350.80 and 41,646.36

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Solution

The fourth proportional to 91,578, 137,350.80 and 41,646.36 is: 62,462.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,578 : 137,350.80 = 41,646.36 : x
  2. Step 2: Convert to fraction form
    91,578/137,350.80 = 41,646.36/x
  3. Step 3: Cross multiply
    91,578x = 137,350.80 × 41,646.36
  4. Step 4: Simplify right side
    91,578x = 5,720,160,863.09
  5. Step 5: Solve for x
    x = 5,720,160,863.09/91,578
  6. Step 6: Final answer
    x = 62,462.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.